Window construction



JUN 13 1'933- l w. s. HAMM A 1,913,756 I 4 WINDOW CONSTRUGTION Filed Feb. 8, 1932 2 Sheets-SheetI 1 W. s, HAMM WINDOW CONSTRUCTION 2 Sheets-Sheet 2 Filed Feb.

MQW/511mm,

June`l3, 1933.

WILLIAM s. HAMM, OF ELKHARI', INDIANA, AssIGrNOB.` To THE ADLAKE Patented .lune 13, 1933` UNITED STATES CHICAGO,l ILLINOIS, A CORPORATION oF ILLINOIS PATENT OFFICE j 'j WINDOW j CONSTRUCTION Application. inea February 8.19325; serial No. 591,709.

The `present `invention relates to window constructiomand has for its object the pro-` vision of improv-ed means for holding a Vertically movable sash tightin both its open and closed positions.

While the foregoing statement is indicative ina general way of the nature of the invention, other more specific objects and advantages will be apparent to those skilled in the art upon a full understanding `of Vthe construction, arrangement and operation of the parts constituting the improvement.

One form of the invention is presented herein by way of exemplification, but it will of course be appreciated that `the invention is susceptible of embodiment in other structurally modified forms coming equally `within the contemplated scope of the appended claims.` In theaccompanying drawings: j

Fig 1 is an inside elevation of a window in which the invention is embodied; i j

Fig. 2 is an elevation of one of the inner sash stops, viewedin the plane `of the sash.;

Figs. 3, and 5, are horizontal sections taken on the respective section linesindicated onFig.2; a

Fig. 6 is a vertical section `through the sash, taken on the line 6-6 of Fig. 1, showing the sash in its closed position;

Fig. 7 is asimilar view, showing the sash in a released and `partially raised position; and j v Fig. V8 is a similar view, showing the sash in one of its stationaryelevated positions.

Referring more in detail to the drawings,

the window shown therein is provided, at each side thereof, with an outer stoplO and an inner stop 11. Both stops are attached to the usual post plate12 and are spaced apart from each other farenough to permit the sash 13 to slide freely up and down therebetween. To insure proper spacing, the inner stop 11 is provided with a flange 14 which projects outwardly therefrom along the face of the `post plate into engagement with the outer stop 11. j

The inner stop 11, which preferably contains a curtain guide groove-15, is detachably securedV to the post plate by screws 16 or other suitable attaching means. This stop is of hollow sheet metal construction and the side of the same which faces toward the sash is open, thereby forminga channel 17. The channel 17 contains a lock rack 18 of nov el construction, arrangement and operation. The rack 18 is pivotally mounted inthe COMPANY, oi`

channel 17 on a cross pin 19, for a purpose which will hereinafter bey explained. The rack isU-shaped in cross section, and is arranged with the back of the same facing j toward the sash. A block 2O is positioned in the raclrat the location of the pin `19in order to reinforce the same. `The `pin 19`is preferablyscrewed into the inner stop 11, with the Vheadfof the pin at the back thereof, whereby topermit detachment ofthe rack upon removal of the inner stop from the post i i plate. VBelow the pin 19 the rack 18 is providedat intervals with inclined seats 21 for coaction with a pawl 22 which forms a part of the loclr on the sash.` j

The upper end of the rack 18 carries a shoe 23, which shoeis pivotally attached to the rack by a pin 24: and is adapted to engage flatly with the upper portion ofthe sash `when pressed against the latter. The shoe 23 will be pressed against` the sash when the rack 18Vis engaged and oscillated by the pawl 22 of the lock. While the pawl 22 may bethe `nose of an ordinary throw-over type lock, it is shown herein asa pivotally mounted member whichis cammed outwardly away frorn the sash by the beveled end ofa bolt' 25 when the bolt is projected into engagement therewith by a spring 26.` A finger piece 27 is Oonnectedwith the bolt 25 in sucha way as to retractthe bolt and allow the pawl to return toward the sash when the finger piece is depressed. Theparticular lockassembly shown forms the subject matand will, upon being lowered into abutment with the nearest seats 21, oscillate the racks in the channels 17 under the weight of the sash. As a result of this, the shoes 23 will force the upper portions of the sash against the outer stops 10, and the throwover edect caused by the inclined positions of the pawls and the weight of the sash will force the lower portions of the sash against the outer stops, producing a tight, noiseless engage@ ment therebetween. one of such raised positions in Fig. S. j e i To lower the sash from an elevated position, it is merely necessary to depress the finger pieces 27 and give the sash a slight upward movement, whereby the pawls 22 will drop back into the plane of the sash and the shoes 23 will be released, allowing the sash to be moved `freely and to be lowered without any resistance into its closed position. The sash is shown in freed condition in Fig. 7.

Vhen the sash reaches its fully closed position, releasing the linger pieces 27 will a1- low the lower ends of the pawls 22 to `be forced away from the sash into engagement with the back walls of the lowermost seats 28, and the pressure thereby'exerted against the lower ends of the racks by the action of the springs 26 in the locks will oscillate the racks far enough to force the shoes 23 against the upper portions of the sash and press the latter snugly against the outer stops. At the same time, the pressure exerted by the pawls against the racks will react against the lower portion of the sash topress the latter tightly against the outer stops.

The lowermost seats 28 on the racks, against which the pawls 22 engage when the sash is in its closed position, are preferably shallower and longer than the other seats, whereby to utilize the force of the springs 26 to the best advantage and prevent any part of the weight of the sash from being supported by the rack, which support might otherwise prevent the sash from fully bottoining on the sill. The closed position of the sash is shown in Fig. 6.

The angle at which the bolts 25 bear against the pawls 22 when the latter are projected is preferably such as to provide a substantial pressure of the pawls against theV racks, which pressure is particularly desirable when the sash is in lits closed position and the pawls are bearing against the lower ends of the racks. The angle referred to also is preferably such as to prevent the pawls from backing` up the bolts when pressure is applied to the pawls, thereby preventing even the strongest wind pressure from forcing the lower port-ion of thev sash inwardly away from the outer stops, and also preventing the sash from being raised from thev outside.

To open the sash, it is merely necessary to rlhe sash isvshown in l depress the linger pieces 27, whereupon the pawls 22 will drop back away from the lower ends of the racks, the pressure applied by the shoes 23 will be released, and the sash will be freed in its guides and can be raised without appreciable elfort.

t will ber observed that the racks 18, instead of being straight, are of slightly angular form, and that the seats 21 in the racks are all of substantially theY same size and depth, with thev possible exception of the lowermost ones, and are spaced equidistant from the sash when the latter is in sealed engagement with the'outer stops 10. The inner stops 11 are preferably provided with small tongues 29 which extend into the lower ends of the channels 17 and limit the out ward swinging movements of the lower ends of the racks.

I claim:

1. In window construction, the combination with a window frame, and a vertically movable sash in the frame, of outer sash stops, inner sash stops, lock racks pivotally associated with the inner sash stops, shoes pivotally connected with the upper ends of the racks tor engagement with the sash, yand means for causing the weight of the sash when in raised position to move the racks in such a way as to force the shoes against the sash.

2. In window construction, the combination with a window frame, and a vertically movable sash in the frame, of outer sash stops, inner sash stops having channels which open toward the sash, lock racks pivotally mounted in the channels, shoes pivotally connected with'the upper ends of the racks for projection from the channels into engagement with the sash, and means for causing the weight of the sash when in raised position to move the racks in such a way as to force the shoes against the sash.

3. In window construction, the combination with a window frame having outer sash stops, and a vertically movable sash in the frame having normally projected lock members, of means actuated by the weight of the sash when the latter is in raised position and by the projection of the lock members when the sash is in lowered position for pressing the sash against the stops, said means including a pivotally mounted lock rack at each side of the frame for supporting the sash at any one of several predetermined elevations, and aI pivotally mounted shoe at the upper end of the rack which is pressed by the latter against the upper portion of the sash upon the rack being engaged and oscillated by the lock member at that side of the frame.

4t. In window construction, the combinaion with a window frame, and a vertically movable sash in the frame, of outer sash stops, inner sash stops, pivotally mounted lock racks associated with the inner stops and provided below the pivotal axes thereof with a number of seats, shoes which are mounted ftionof .the sash and utilizing the spring force of said membersV when the sash is in lowered position to osoillate the racks for the same purpose. a

5. In window construction, the `combination with a window frame, and a vertically n movable sash inthe frame, of outer sash stops,

movable lock racks in opposition to the outer stops, shoes pivotally `connected with the upper `ends'of the racks for engagement with the sash, and means for causing the weight of the sash when in raised position tomove `the racks in such a way as'to force the-shoes againstthe sash.

In testimony whereof I have hereunto subscribed my naine.

WILLIAM s. HAMM. 

